Choose up to one creature. Destroy the rest.

: Add .
, : Exile target creature you control.
, , Sacrifice Endless Sands: Return each creature card exiled with Endless Sands to the battlefield under its owner's control.

Flying
When Eon Frolicker enters the battlefield, if you cast it, target opponent takes an extra turn after this one. Until your next turn, you and planeswalkers you control gain protection from that player. (You and planeswalkers you control can't be targeted, dealt damage, or enchanted by anything controlled by that player.)

Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

Flying
: Return Eternal Dragon from your graveyard to your hand. Activate this ability only during your upkeep.
Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle your library.)

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Flying
Whenever Ethereal Forager attacks, you may return an instant or sorcery card exiled with Ethereal Forager to its owner's hand.

Return up to two target creature cards from your graveyard to the battlefield. Each of those creatures is a black Zombie in addition to its other colors and types. Put Ever After on the bottom of its owner's library.

Choose one —
• Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.
• Return target creature card from your graveyard to your hand.
• Target creature gains flying until end of turn.

: Add one mana of any color that a land an opponent controls could produce.

If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.

You may put two +1/+1 counters on a creature you control. Then all creatures get -4/-4 until end of turn.

Return up to two target creature cards from your graveyard to your hand.

Haste
Whenever Fireflux Squad attacks, you may exile another target attacking creature you control. If you do, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield tapped and attacking and the rest on the bottom of your library in a random order.

If you control a commander, you may cast this spell without paying its mana cost.
Creatures you control gain indestructible until end of turn.

Cycling abilities you activate cost up to less to activate.

Forgotten Cave enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)

Draw two cards, then discard two cards. Untap up to three lands.

Frontier Bivouac enters the battlefield tapped.
: Add , , or .

Whenever one or more creatures attack one of your opponents or a planeswalker they control, those creatures gain menace until end of turn.

Battalion — Whenever Frontline Medic and at least two other creatures attack, creatures you control gain indestructible until end of turn.
Sacrifice Frontline Medic: Counter target spell with in its mana cost unless its controller pays .